Astrakhanskiy Biosphere Reserve

Location:Astrakhan, Russia
IUCN Category:Ia
Area:167,827 acres (67,917 hectares)
Species:All  Endangered  Invasive
Website:View website
Map:View Google Map
Climate:View Climate Data
Land Use:View Land Use Data

Ecoregions

Caspian lowland desert

Soils

Link to Map
Protected Area Boundary
 ABC
    
Share 80 %10 %10 % 
Soil TypeMollic GleysolsMollie FluvisolsDystric FluvisolsEutric FluvisolsThionic Fluvisols
Topsoil TextureMediumCoarseCoarseCoarseMedium
Reference Depth100 cm100 cm100 cm100 cm100 cm
DrainagePoorPoorPoorPoorPoor
Available Water Capacity150 m150 m150 m150 m150 m
Phase 1PhreaticPhreaticFloodedFloodedPhreatic
Phase 2Saline PhreaticSalineSaline
Root ObstacleNone to 80 cmNone to 80 cm0 - 80 cm0 - 80 cmNone to 80 cm
Impermeable LayerNone to 150 cmNone to 150 cmNone to 150 cmNone to 150 cmNone to 150 cm
Soil Water RegimeWet within 80 cm for 3 to 6 months, but not wet within 40 cm for over 1 monthWet within 40 cm depth for over 11 monthWet within 40 cm depth for over 11 monthWet within 80 cm over 6 months, but not wet within 40 cm for over 11 monthWet within 40 cm depth for over 11 month
Topsoil Properties
Gravel4 %10 %10 %18 %4 %
Sand39 %77 %79 %80 %34 %
Silt39 %15 %12 %12 %37 %
Clay22 %8 %9 %8 %29 %
USDA TextureLoamSandy loamSandy loamLoamy sandClay loam
Reference Bulk Density1.39 g/cm³1.61 g/cm³1.6 g/cm³1.62 g/cm³1.34 g/cm³
Bulk Density1.28 g/cm³1.4 g/cm³1.39 g/cm³1.27 g/cm³1.36 g/cm³
Organic Carbon1.65 %0.87 %0.87 %0.58 %2.47 %
PH6.66.45.36.84.4
Clay Cation Exchange Capacity45 cmol kg⁻¹72 cmol kg⁻¹34 cmol kg⁻¹64 cmol kg⁻¹15 cmol kg⁻¹
Soil Cation Exchange Capacity17 cmol kg⁻¹9 cmol kg⁻¹5 cmol kg⁻¹7 cmol kg⁻¹19 cmol kg⁻¹
Base Saturation87 %87 %55 %89 %94 %
Total Exchangeable Bases9.8 cmol kg⁻¹6.8 cmol kg⁻¹2.1 cmol kg⁻¹7.4 cmol kg⁻¹16.7 cmol kg⁻¹
Calcium Carbonate0 %0.1 %0 %0 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium2 %0 %3 %3 %0 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Subsoil Properties
Gravel3 %10 %17 %10 %8 %
Sand37 %77 %79 %79 %27 %
Silt35 %13 %11 %11 %41 %
Clay28 %10 %10 %10 %32 %
USDA TextureClay loamSandy loamSandy loamSandy loamClay loam
Reference Bulk Density1.35 g/cm³1.58 g/cm³1.58 g/cm³1.59 g/cm³1.31 g/cm³
Bulk Density1.35 g/cm³1.5 g/cm³1.5 g/cm³1.44 g/cm³1.39 g/cm³
Organic Carbon0.69 %0.5 %0.26 %0.24 %1.62 %
PH7.26.45.56.93.5
Clay Cation Exchange Capacity44 cmol kg⁻¹52 cmol kg⁻¹38 cmol kg⁻¹57 cmol kg⁻¹30 cmol kg⁻¹
Soil Cation Exchange Capacity15 cmol kg⁻¹7 cmol kg⁻¹4 cmol kg⁻¹6 cmol kg⁻¹14 cmol kg⁻¹
Base Saturation88 %90 %46 %93 %77 %
Total Exchangeable Bases10.7 cmol kg⁻¹7.1 cmol kg⁻¹1.5 cmol kg⁻¹9 cmol kg⁻¹11.9 cmol kg⁻¹
Calcium Carbonate4 %0 %0 %0.1 %0 %
Calcium Sulphate0 %0 %0 %0 %0 %
Exchangeable Sodium1 %0 %2 %2 %5 %
Electrical Conductivity0.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-10.1 dS m-1
Soil data provided by FAO/IIASA/ISRIC/ISSCAS/JRC, 2012. Harmonized World Soil Database (version 1.2). FAO, Rome, Italy and IIASA, Laxenburg, Austria.